I tend to read BA, AA, CX, and if I'm going to take a trip on another OW carrier, I'll go read their forum for a quick refresher. I also look at the trip reports section once in a while. And I read about 5 travel blogs for some variety though the quality of most seems down lately. I've thought it would be interesting to do a business travel optimisation blog, but I don't really have time to do that regularly.

More than 90% of what I post is here.
That's about all I have time to do, and even that's a stretch sometimes. But I find it more informative than spending lots of time on Facebook.